What is the purpose of a differential white blood cell count?

The purpose of a differential white blood cell count is to determine the percentage of different types of white blood cells present in the blood. This count provides crucial information about the immune system and can indicate the presence of infection, inflammation, or other medical conditions. Each type of white blood cell plays a unique role in the body’s immune response, so analyzing their distribution can help clinicians diagnose various health issues.

For instance, an increase in neutrophils may suggest a bacterial infection, while a rise in lymphocytes might indicate a viral infection. By knowing the proportions of these cells, healthcare providers can tailor further investigations and treatment plans more effectively. Understanding the differential count can guide medical decisions and patient management, illustrating its significance in clinical practice.